const validator = require('validator');
const Sequelize = require('./models').Sequelize;

module.exports = class Utils {
  /**
   * Validates a UUID string.
   * @param {*} value - The value to validate as UUID
   * @returns {string|null} - The valid UUID string, or null if invalid
   */
  static uuid(value) {
    if (value && validator.isUUID(String(value))) {
      return value;
    }
    return null;
  }

  static ilike(model, column, value) {
    return Sequelize.where(
      Sequelize.fn('lower', Sequelize.col(`${model}.${column}`)),
      {
        [Sequelize.Op.like]: `%${value}%`.toLowerCase(),
      },
    );
  }
};